This has been a fairly long project (at least for me) that I've been working on. Some may remember that I posted a comparison of the IDAS NBZ & Antlia ALP-T filters a few weeks ago.
https://www.astrobin.com/uz2syz/E/ After I did that comparison, I continued to collect data over the last 4-5 weeks and represents my longest integration time to date. What you see here is the result of over 33hrs of data collected, however after going through it and sorting out what I didn't want I ended up with about 28hrs worth of data that I used.
I used all 3hrs worth of the NBZ data in combination with the Antlia data.
For star color, I collected short sub data and did a photometric color calibration for accurate star color. I processed them separately and combined them into the starless HOO version of the image above. I will be working on a SHO version as well.
As I always do, I processed all the data in APP, and post processed in PI and Gimp.
Many of us know how difficult this object is to photograph. In doing the research, I knew I had to really collect a lot of narrowband data, especially with my OSC setup. Just another reason I decided to spring for the ALP-T filter, being that it is a 5nm filter in both Ha & OIII wavelengths.
The object itself doesn't have a visual magnitude on it (at least I couldn't find one) but the central star is clearly visible (especially when I didn't do a star reduction) and its magnitude I've seen stated between 20.5 - 22nd magnitude depending on what scale is used. A close up crop of the central star was included in the revisions, with an arrow pointing to it.
Any and all comments are welcome, good or bad.
Thanks for looking!
Comments